config.mk revision 433f1614b002df4f0fac1d916881a2d659893f19
1## Clang configurations. 2 3# WITHOUT_CLANG covers both HOST and TARGET 4ifeq ($(WITHOUT_CLANG),true) 5WITHOUT_TARGET_CLANG := true 6WITHOUT_HOST_CLANG := true 7endif 8 9LLVM_PREBUILTS_VERSION := 3.6 10LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/$(LLVM_PREBUILTS_VERSION)/bin 11 12CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX) 13CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX) 14LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX) 15LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX) 16 17CLANG_TBLGEN := $(BUILD_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX) 18LLVM_TBLGEN := $(BUILD_OUT_EXECUTABLES)/llvm-tblgen$(BUILD_EXECUTABLE_SUFFIX) 19 20# The C/C++ compiler can be wrapped by setting the CC/CXX_WRAPPER vars. 21ifdef CC_WRAPPER 22 ifneq ($(CC_WRAPPER),$(firstword $(CLANG))) 23 CLANG := $(CC_WRAPPER) $(CLANG) 24 endif 25endif 26ifdef CXX_WRAPPER 27 ifneq ($(CXX_WRAPPER),$(firstword $(CLANG_CXX))) 28 CLANG_CXX := $(CXX_WRAPPER) $(CLANG_CXX) 29 endif 30endif 31 32# Clang flags for all host or target rules 33CLANG_CONFIG_EXTRA_ASFLAGS := 34CLANG_CONFIG_EXTRA_CFLAGS := 35CLANG_CONFIG_EXTRA_CONLYFLAGS := -std=gnu99 36CLANG_CONFIG_EXTRA_CPPFLAGS := 37CLANG_CONFIG_EXTRA_LDFLAGS := 38 39CLANG_CONFIG_EXTRA_CFLAGS += \ 40 -D__compiler_offsetof=__builtin_offsetof 41 42# Help catch common 32/64-bit errors. 43CLANG_CONFIG_EXTRA_CFLAGS += \ 44 -Werror=int-conversion 45 46# Workaround for ccache with clang. 47# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html. 48CLANG_CONFIG_EXTRA_CFLAGS += \ 49 -Wno-unused-command-line-argument 50 51# Disable -Winconsistent-missing-override until we can clean up the existing 52# codebase for it. 53CLANG_CONFIG_EXTRA_CPPFLAGS += \ 54 -Wno-inconsistent-missing-override 55 56CLANG_CONFIG_UNKNOWN_CFLAGS := \ 57 -finline-functions \ 58 -finline-limit=64 \ 59 -fno-canonical-system-headers \ 60 -fno-tree-sra \ 61 -funswitch-loops \ 62 -Wmaybe-uninitialized \ 63 -Wno-error=maybe-uninitialized \ 64 -Wno-free-nonheap-object \ 65 -Wno-literal-suffix \ 66 -Wno-maybe-uninitialized \ 67 -Wno-old-style-declaration \ 68 -Wno-psabi \ 69 -Wno-unused-but-set-variable \ 70 -Wno-unused-but-set-parameter \ 71 -Wno-unused-local-typedefs 72 73# Clang flags for all host rules 74CLANG_CONFIG_HOST_EXTRA_ASFLAGS := 75CLANG_CONFIG_HOST_EXTRA_CFLAGS := 76CLANG_CONFIG_HOST_EXTRA_CPPFLAGS := 77CLANG_CONFIG_HOST_EXTRA_LDFLAGS := 78 79# Clang flags for all target rules 80CLANG_CONFIG_TARGET_EXTRA_ASFLAGS := 81CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc 82CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc 83CLANG_CONFIG_TARGET_EXTRA_LDFLAGS := 84 85# HOST config 86clang_2nd_arch_prefix := 87include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk 88 89# HOST_2ND_ARCH config 90ifdef HOST_2ND_ARCH 91clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX) 92include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk 93endif 94 95# TARGET config 96clang_2nd_arch_prefix := 97include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk 98 99# TARGET_2ND_ARCH config 100ifdef TARGET_2ND_ARCH 101clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX) 102include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk 103endif 104 105# Address sanitizer clang config 106ADDRESS_SANITIZER_RUNTIME_LIBRARY := libclang_rt.asan_$(TARGET_ARCH)_android 107ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address -fno-omit-frame-pointer 108ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit 109 110ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST := -rdynamic 111ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST := -lpthread -ldl 112ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST := 113ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST := libasan 114 115ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET := 116ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET := 117ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET := libdl $(ADDRESS_SANITIZER_RUNTIME_LIBRARY) 118ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET := libasan 119 120# This allows us to use the superset of functionality that compiler-rt 121# provides to Clang (for supporting features like -ftrapv). 122COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras 123 124ifeq ($(HOST_PREFER_32_BIT),true) 125# We don't have 32-bit prebuilt libLLVM/libclang, so force to build them from source. 126FORCE_BUILD_LLVM_COMPONENTS := true 127endif 128